DC motor driver circuit design using LM628 LM629 dedicated motion-control processors


Posted on Feb 7, 2014

Using the LM628 LM629 dedicated motion-control processors can be designed a variety of DC and brushless DC servo motors, and other servomechanisms applications. The power path of this electronic project, motor driver is based on the LM12 high power operational amplifier that can be used in some other power applications like : motor controller,


DC motor driver circuit design using LM628 LM629 dedicated motion-control processors
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audio amplifiers or some other power applications. Resistors R1 and R2 should be chosen to set the gain to provide maximum output voltage consistent with maximum input voltage. This circuit provides a gain of 2. 2, which allows for amplifier output saturation at ±22V with a ±10V input, assuming power supply voltages of ±30V. The amplifier gain should not be higher than necessary because the system is non-linear when saturated, and because gain should be controlled by the LM628.




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